WM8146 Wolfson Microelectronics Ltd., WM8146 Datasheet - Page 15

• Manufacturer Part Number: WM8146
• Description: 12-bit ( 8+4-bit ) Linear Sensor Image Processor
• Manufacturer: Wolfson Microelectronics Ltd.

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REGISTER MAP DESCRIPTION
Setup
Register 1
Setup
Register 2
Setup
Register 3
Software
Reset
Setup
Register 4
Registers
100100 to
100111
Table 3 Register Control Bits
WOLFSON MICROELECTRONICS LTD
REGISTER
BIT
1:0
5:4
7:6
NO
0
1
2
6
2
1
0
CDSREF[1:0]
BIT NAME(S)
CHAN[1:0]
DACRNG
VSMP6M
RLC[1:0]
ENADC
INVOP
DSIGN
MONO
CDS
DEFAULT
01
01
00
1
1
0
0
0
0
0
ADC standby control : 0=standby, 1=active
Select correlated double sampling mode:
0=single ended mode, 1=CDS mode
Mono/colour select: 0=colour, 1=monchrome operation
Required when VSMP at 6MSPS:
0=other mode, 1=VSMP at 6MSPS
Digitally inverts the polarity of input data.
0= negative going video gives negative going output,
1=negative-going video gives positive going output data.
Reset Level Clamp Voltage:
00 = 1.5V; 01 = 2.5V; 10 = 1.5V; 11 = Reserved
CDS mode reset timing adjust
00 = advance 1 MCLK period
01 = Normal
10 = Retard 1 MCLK period
11 = Retard 2 MCLK periods
Monochrome mode channel select
00 = Red channel select
01 = Green channel select
10 = Blue channel select
11 = Reserved
Write any value to the Software Reset register to cause all
cells to be reset.
Offset DAC Output Range:
0 = DAC Output range =VMID/2 = +/-1.25V
1 = DAC output Range = 1.5*VMID/2 = +/-1.875V
Polarity of Offset DAC output
0 = Positive Output (Offset added)
1 = Negative Output (Offset removed)
DESCRIPTION
PP Rev 1.1 January 2000
WM8146
15